Question

Males of different species of the fruit fly Drosophila that live in the same parts of the Hawaiian Islands have different elaborate courtship rituals. These rituals involve fighting other males and making stylized movements that attract females. What type of reproductive isolation does this represent?
a. habitat isolation
b. temporal isolation
c. behavioral isolation
d. gametic isolation

Answer 1

Answer: The correct answer is option c.

Explanation:

Behavioral isolation is a type pre-zygotic reproductive isolation, that is, it prevents the formation of zygote.

It includes all the differences the organisms of different species have in choosing a mate.

It includes all the rituals followed by the organisms before reproduction.

For example, pattern of mating dance, voice (singing) pattern, fighting rituals, et cetera.

So, if the two species follow different rituals or behavior then they do not tend interbreed.

The same is given in the question the two species of fruit fly follow different courtship rituals due to which they do not interbreed.

Thus, it is an example of behavioral isolation.